CN105489688A - Solar battery module and preparation method thereof - Google Patents
Solar battery module and preparation method thereof Download PDFInfo
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- CN105489688A CN105489688A CN201610004201.8A CN201610004201A CN105489688A CN 105489688 A CN105489688 A CN 105489688A CN 201610004201 A CN201610004201 A CN 201610004201A CN 105489688 A CN105489688 A CN 105489688A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims abstract description 148
- 239000011248 coating agent Substances 0.000 claims abstract description 18
- 238000000576 coating method Methods 0.000 claims abstract description 18
- 230000005855 radiation Effects 0.000 claims abstract description 7
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 66
- 238000005476 soldering Methods 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 26
- 239000006071 cream Substances 0.000 claims description 18
- 238000005219 brazing Methods 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000010248 power generation Methods 0.000 abstract 1
- 229910000679 solder Inorganic materials 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 241000208340 Araliaceae Species 0.000 description 9
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 9
- 235000003140 Panax quinquefolius Nutrition 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 235000008434 ginseng Nutrition 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0516—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module specially adapted for interconnection of back-contact solar cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention relates to a solar battery module and a preparation method thereof. The solar battery module comprises at least two battery packs, which are connected with each other in series, wherein each battery pack comprises at least two battery plate strings which are connected with each other in parallel; each battery plate string comprises at least two battery cutting blades which are connected with each other in series; two adjacent battery cutting blades in the same battery plate string are connected with each other in series in an overlapping manner; each battery cutting blade comprises a front surface for absorbing optical radiation and a back surface which is arranged back to the front surface; each front surface is provided with a main grid which is used for collecting a current; each back surface is provided with a back electrode; and the main grid of each battery cutting blade and the back electrode of the adjacent battery cutting blade are welded together through a solder paste coating. Overlapping connection is achieved, so that the formed battery cutting blades in each battery plate string are tightly arranged; and the non-power generation area is small. Furthermore, the adjacent battery cutting blades are in overlapping connection, so that the contact conducting area is relatively large; and the resistance loss is reduced. Furthermore, the invention further provides the preparation method of the solar battery module.
Description
Technical field
The present invention relates to technical field of solar batteries, particularly relate to a kind of solar module and preparation method thereof.
Background technology
Solar energy, as a kind of emerging energy, compared with traditional fossil fuel, has the advantage of each side such as inexhaustible, clean environment firendly.A kind of Solar use mode main is at present that electric energy exports by the light energy conversion of reception by solar module, and traditional solar module is by carrying out encapsulating after some solar battery sheets (or claiming photovoltaic cell) series connection and arranging the area battery assembly formed by square formation.Wherein, solar battery sheet absorbs luminous energy, and the accumulation of heterocharge appears in battery two ends, namely produce " photovoltage ", Here it is " photovoltaic effect ", under the effect of photovoltaic effect, the two ends of solar cell produce electromotive force, thus transform light energy is become electric energy.Usually, component efficiency can, far below cell piece efficiency, have some questions to affect its difference: the actual power area of (1) assembly is less than assembly area; (2) ohmic loss in assembly; (3) assembly is by light loss; (4) cell piece mismatch loss.
In traditional solar module, adjacent cell piece adopts welding interconnected, and this kind of interconnected version, the first two loss form determined in assembly is inevitable.
Summary of the invention
Based on this, provide a kind of solar module that can reduce not generating area in assembly and ohmic loss.
A kind of solar module, comprise at least two battery pack of mutually connecting, described battery pack comprises at least two cell piece tandems parallel with one another, described cell piece tandem comprises at least two battery cutting blades of mutually connecting, the overlapping series connection of adjacent two described battery cutting blades in same cell piece tandem, the back side that described battery cutting blade comprises the front for absorbing light radiation and arranges dorsad relative to described front, described front is provided with the main grid for collecting electric current, the described back side is provided with back electrode, the main grid of described battery cutting blade and the back electrode of adjacent described battery cutting blade are welded together by tin cream coating.
Above-mentioned solar module, the main grid of battery cutting blade and the back electrode of adjacent cell cutting blade are welded together by tin cream coating, realize overlapping connection, and closely, generating area is not few for the battery cutting blade arrangement in the cell piece tandem therefore formed.In addition, overlapping connection between adjacent battery cutting blade, the area of contact conduction is comparatively large, reduces ohmic loss.
Wherein in an embodiment, the area forming described at least two battery cutting blades of same described cell piece tandem is identical, the described main grid of battery cutting blade and the width of back electrode and identical length etc.
Wherein in an embodiment, comprise 4 battery pack of mutually connecting, described battery pack comprises 6 cell piece tandems parallel with one another, and described cell piece tandem comprises 17 battery cutting blades of mutually connecting.
Wherein in an embodiment, comprise 6 battery pack of mutually connecting, described battery pack comprises 4 cell piece tandems parallel with one another, and described cell piece tandem comprises 17 battery cutting blades of mutually connecting.
Wherein in an embodiment, comprise 3 battery pack of mutually connecting, described battery pack comprises 8 cell piece tandems parallel with one another, and described cell piece tandem comprises 17 battery cutting blades of mutually connecting.
Wherein in an embodiment, comprise 8 battery pack of mutually connecting, described battery pack comprises 3 cell piece tandems parallel with one another, and described cell piece tandem comprises 17 battery cutting blades of mutually connecting.
Wherein in an embodiment, comprise 2 battery pack of mutually connecting, described battery pack comprises 12 cell piece tandems parallel with one another, and described cell piece tandem comprises 17 battery cutting blades of mutually connecting.
A kind of preparation method of solar module is also provided, comprises the steps:
There is provided at least two battery cutting blades, the back side that described battery cutting blade comprises the front for absorbing light radiation and arranges dorsad relative to described front, described front is provided with the main grid for collecting electric current, and the described back side is provided with back electrode;
Soldering tin material is supplied to ultrasonic brazing unit, melt described soldering tin material, by on the soldering tin material main grid that is coated on described battery cutting blade after fusing or back electrode, obtain battery cutting blade main grid or back electrode being coated with soldering tin material, the battery cutting blade at least two described main grids or back electrode being coated with soldering tin material is connected successively, obtain cell piece tandem, in described cell piece tandem, the main grid of described battery cutting blade and the back electrode of adjacent described battery cutting blade are welded together by tin cream coating;
At least two described cell piece tandems are carried out parallel connection, obtains battery pack;
At least two described battery pack are connected, obtains solar module.
The solar module that the preparation method of above-mentioned solar module prepares, the main grid of battery cutting blade and the back electrode of adjacent cell cutting blade are welded together by tin cream coating, realize overlapping connection, therefore closely, generating area is not few for the battery cutting blade arrangement in the cell piece tandem formed.In addition, overlapping connection between adjacent battery cutting blade, the area of contact conduction is comparatively large, reduces ohmic loss.
Wherein in an embodiment, that is connected successively by the battery cutting blade at least two described main grids or back electrode being coated with soldering tin material is operating as: the back electrode at rear described battery cutting blade is covered in successively be coated with soldering tin material on the main grid of front described battery cutting blade;
Or the main grid at rear described battery cutting blade is covered in successively be coated with soldering tin material on the back electrode of front described battery cutting blade.
Wherein in an embodiment, described ultrasonic brazing unit comprises for providing that part given by the tin silk of tin silk, for melting the ultrasonic bonding head of tin silk and giving the soldering tip feeding part of part and described ultrasonic bonding head for fixing described tin silk, described soldering tip feeding part can move along the described main grid of battery cutting blade or the length direction of back electrode.
Accompanying drawing explanation
Fig. 1 is the front schematic view of cell piece tandem;
Fig. 2 is the side schematic view of cell piece tandem;
Fig. 3 is the flow chart of the preparation method of the solar module of an execution mode;
Fig. 4 is the schematic diagram of the ultrasonic welding system of an execution mode;
Fig. 5 is the front schematic view of the solar module of embodiment one;
Fig. 6 is the schematic rear view of the solar module of embodiment one;
Fig. 7 is the circuit diagram of the solar module of embodiment one;
Fig. 8 is the front schematic view of the solar module of embodiment two;
Fig. 9 is the schematic rear view of the solar module of embodiment two;
Figure 10 is the circuit diagram of the solar module of embodiment two;
Figure 11 is the front schematic view of the solar module of embodiment three;
Figure 12 is the schematic rear view of the solar module of embodiment three;
Figure 13 is the circuit diagram of the solar module of embodiment three;
Figure 14 is the circuit diagram of the solar module of embodiment four;
Figure 15 is the circuit diagram of the solar module of embodiment five;
Figure 16 is the circuit diagram of the solar module of embodiment six;
Figure 17 is the circuit diagram of the solar module of embodiment seven;
Figure 18 is the circuit diagram of the solar module of embodiment eight.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Below in conjunction with accompanying drawing, describe the better embodiment of solar module of the present invention in detail.
The invention provides a kind of solar module, it comprises at least two battery pack of mutually connecting, battery pack comprises at least two cell piece tandems parallel with one another, cell piece tandem comprises at least two battery cutting blades of mutually connecting, adjacent two overlapping series connection of battery cutting blade in same cell piece tandem, the back side that battery cutting blade comprises the front for absorbing light radiation and arranges dorsad relative to front, front is provided with the main grid for collecting electric current, the back side is provided with back electrode, the main grid of battery cutting blade and the back electrode of adjacent cell cutting blade are welded together by tin cream coating.Therefore, adjacent two battery cutting blades can realize overlapping connection, and closely, generating area is not few for the battery cutting blade arrangement in the cell piece tandem of formation.In addition, overlapping connection between adjacent battery cutting blade, the area of contact conduction is comparatively large, reduces ohmic loss.
Refer to Fig. 1 and Fig. 2, be respectively front schematic view and the side schematic view of cell piece tandem 100 in solar module of the present invention.Cell piece tandem 100 is in series by the cell piece 110 of more than 2 is overlapping.Cell piece series connection in Fig. 1 comprises four battery cutting blades, but its quantity is not limited to 4 certainly.
Refer to Fig. 2, each battery cutting blade 110 comprises for the front 112 of radiation-absorbing and the back side 114 that arranges dorsad relative to front 112.Front 112 is provided with the main grid 1122 for collecting electric current.The back side 114 is provided with back electrode 1142.Main grid 1122 and the projection of back electrode 1142 on front 112 or the back side 114 offset one from another.In Fig. 2, main grid 1122 and back electrode 1142 lay respectively at the relative end of two of cell piece 110.The width of main grid 1122 and back electrode 1142 and identical length etc.
When multiple battery cutting blade 110 connects formation cell piece tandem, ginseng Fig. 2, is followed successively by first battery cutting blade, second battery cutting blade and the 3rd battery cutting blade from left to right.First, first battery cutting blade is just put, then the back electrode 1142 (being positioned at the left side of second battery cutting blade) at the second battery cutting blade back side is welded overlapping with the main grid 1122 (being positioned on the right side of first battery cutting blade) of first battery cutting blade by tin cream coating 120.Similarly, the back electrode 1142 (being positioned on the left of the 3rd battery cutting blade) at the 3rd electric cutup pool back side welds overlapping with the main grid 1122 (being positioned on the right side of second battery cutting blade) of second battery cutting blade by tin cream coating 120.When there being the battery cutting blade 110 of greater number to need series connection, repeatedly carry out with reference to said method.
Finally, when all battery cutting blades 110 are complete by the overlapping series connection of tin cream coating 120, the front of cell piece tandem 100 as shown in Figure 1.Composition graphs 2, can see, the marginal position of adjacent cell sheet 110 overlaps and is in overlapping state, and this connected mode makes to there is not gap between adjacent two cell pieces 110, and arrangement is comparatively tight, substantially increases the effective area of cell piece tandem 100.And solar module is made up of multiple cell piece tandem 100, therefore between multiple cell piece tandem 100, connected mode is identical, effective generating area of whole solar module also increases greatly, thus improves the conversion efficiency of solar module.Meanwhile, in the present invention, because the main grid 1122 of adjacent cell cutting blade welds overlapping with back electrode 1142 by tin cream coating 120, increase the conductive area between adjacent cell cutting blade, the object reducing ohmic loss can be played.
In multiple cell piece tandems 100 of solar module, the area forming the battery cutting blade 110 of same cell piece tandem 100 is identical.Battery cutting blade 110 can be polycrystalline silicon battery plate, Monocrystalline silicon cell piece, hull cell sheet or crystal silicon composite battery sheet, and it can by obtaining point cuttings such as solar battery sheets.Such as, laser scribing is carried out to 6 cun of crystal silicon solar cell sheets and cut into 3,4 or 5 deciles.Then screen, the efficiency consistency of each battery cutting blade 110 in cell piece tandem 100, matching can be made better, thus also can improve the operating efficiency of whole solar module.
The preparation method of the solar module of one execution mode, as shown in Figure 3, comprises the steps:
S10, provide at least two battery cutting blades, the back side that battery cutting blade comprises the front for absorbing light radiation and arranges dorsad relative to front, front is provided with the main grid for collecting electric current, and the back side is provided with back electrode.
S20, soldering tin material is supplied to ultrasonic brazing unit, melting tin material, by on the soldering tin material main grid that is coated on the battery cutting blade of step S10 after fusing or back electrode, obtain battery cutting blade main grid or back electrode being coated with soldering tin material, the battery cutting blade at least two main grids or back electrode being coated with soldering tin material is connected successively, obtain cell piece tandem, in cell piece tandem, the main grid of battery cutting blade and the back electrode of adjacent cell cutting blade are welded together by tin cream coating.
That is connected successively by the battery cutting blade at least two main grids or back electrode being coated with soldering tin material is operating as: the back electrode at rear battery cutting blade is covered in successively be coated with soldering tin material on the main grid of front battery cutting blade; By facing up of battery cutting blade, tin silk is coated on main grid, carries out welding series connection successively.Or the main grid at rear battery cutting blade is covered in successively be coated with soldering tin material on the back electrode of front battery cutting blade, by battery cutting blade the back side upward, tin silk is coated on back electrode, carry out successively welding series connection.
Refer to Fig. 4, the ultrasonic welding system 300 of one execution mode comprises for providing the tin silk of tin silk to give part 310, for melting the ultrasonic bonding head 320 of tin silk and giving the soldering tip feeding part 330 of part 310 and ultrasonic bonding head 320 for fixing tin silk, soldering tip feeding part 330 can move along the length direction of the main grid of battery cutting blade (in figure Y-direction), and move distance is more than or equal to the length of the main grid of battery cutting blade.
In addition, above-mentioned ultrasonic welding system 300 also comprises strutting piece 340 for supporting soldering tip feeding part 330, for transmitting the series welding platform 350 of battery cutting blade and being positioned at the heating member 360 of below heating battery cutting blade of series welding platform 350.
Be loaded into successively by battery cutting blade on series welding platform 350, series welding platform 350 is adsorbable lives in state battery cutting blade, and moves along X-direction in figure.Series welding platform is equipped with heating member 360 350 times, is provided with thermocouple in heating member 360, and can realize the control to series welding platform 350 heating-up temperature, Platform Designing has Incision Machine's, the absorption battery cutting blade when being coated with tin.
Tin silk is given part 310 and ultrasonic bonding head 320 is arranged on soldering tip feeding part 330, give part 310 soldering tin material is supplied to ultrasonic bonding head 320 by tin silk, tin silk is given part 310 and tin silk is carried out wire feed by the beat of coating, and wire feed rate is adjustable.Ultrasonic bonding head 320 can move along Z-direction in figure, to be adapted to the painting tin distance of battery cutting blade.
The amount of movement of width as feeding of battery cutting blade pressed by series welding platform 350, and the positive electrode making the back electrode of rear live pond cutting blade and front live pond cutting blade be coated with tin overlaps, welding under platform heating, thus the function realizing battery cutting blade series connection welding.
S30, the cell piece tandem at least two step S20 is carried out parallel connection, obtain battery pack.
S40, the battery pack at least two step S30 to be connected, obtain solar module.
The solar module that the preparation method of above-mentioned solar module prepares, the main grid of battery cutting blade and the back electrode of adjacent cell cutting blade are welded together by tin cream coating, realize overlapping connection, therefore closely, generating area is not few for the battery cutting blade arrangement in the cell piece tandem formed.In addition, overlapping connection between adjacent battery cutting blade, the area of contact conduction is comparatively large, reduces ohmic loss.
In addition, the mode of steel mesh printing or point glue equipment spraying can also be adopted to apply tin cream, but mode of printing steel mesh is very thin, easily weares and teares, the life-span, tin cream in use can solidify for a long time at about 8000 times, often needed in cleaning steel mesh residual; The method of some glue spraying is easily blocked up, and needs to clear up in time.And there is not above problem in ultrasonic wave painting tin mode of the present invention, by the control of power, frequency, temperature, speed, can effectively control tinning layer thickness, adopt tin silk scaling powder organic residual few, further increase the reliability of finished product assembly, equipment maintainability promotes greatly, there is no steel mesh and scraper consumptive material, also do not have the problem that syringe needle blocks, cost reduces, and efficiency improves.
Solar module of the present invention, is made up of multiple aforesaid cell piece tandem 100, describes concrete connection scheme below in conjunction with accompanying drawing.
Embodiment one
Ginseng Fig. 5 to Fig. 7, solar module is in series mutually by four battery pack.Each battery pack comprises 6 cell piece tandems 100 in parallel.17 battery cutting blades 110 by the overlapping series connection of tin cream coating 120 are comprised in each cell piece tandem 100.Battery cutting blade 110 utilizes a solar battery sheet to carry out 5 grades to divide cutting obtained.Four battery pack are arranged in two rows, and each row arranges two battery pack.When there being more Battery pack groups, can refer to similar fashion and be arranged to many rows, each package is containing two or more battery pack.
In addition, because solar battery sheet has hot spot characteristic, namely under certain condition, the solar battery sheet of crested in a series arm, will be taken as other energy having the solar cell piece of illumination to produce of load consumption.The solar module of crested now can generate heat, then can have influence on the efficiency of a string solar battery sheet, thus causes the efficiency of whole solar module lower.Therefore, in the present embodiment, each battery pack is connected in parallel to a solar battery component junction box 200 respectively, and this solar battery component junction box 200 is provided with a diode 210.Like this, 6 cell piece tandems 100 in each battery pack are all parallel with diode 210, and when the low hot spot phenomenon of electric current appears in some cell piece tandems 100, electric current is process from diode 210, to avoid energy loss.
Battery cutting blade 110 divides cutting obtained to the solar battery sheet etc. of traditional full wafer, therefore its area is less than the solar battery sheet of full wafer, therefore the output voltage of single battery cutting blade 110 and the solar battery sheet voltage of full wafer consistent, but electric current is less than conventional solar cell sheet.In the present embodiment, each cell piece tandem 100 is in series by multiple battery cutting blade 110, and multiple serial battery 100 becomes a battery pack again side by side simultaneously.In Fig. 7, battery cutting blade 110 is the solar battery sheet of 1/5 size.Assuming that the electric current that complete solar battery sheet passes through is 1, voltage is 1.The electric current then produced in battery cutting blade 110 is 1/5, and voltage is 1.Each cell piece tandem 100 by multiple battery cutting blade, Fig. 7 be in 17, then cumulative electric current is 17 × 1/5, and voltage is 1.Although also namely the electric current of single battery cutting blade is less, by the connection in series-parallel of battery cutting blade, the output voltage of whole solar module and electric current and traditional solar module can be made close, need not requirement of system design be changed thus.
Embodiment two
Ginseng Fig. 8 to Figure 10, solar module is in series mutually by four battery pack.Each battery pack comprises 6 cell piece tandems 100 in parallel.17 battery cutting blades 110 by the overlapping series connection of tin cream coating 120 are comprised in each cell piece tandem 100.Battery cutting blade 110 utilizes a solar battery sheet to carry out 5 grades to divide cutting obtained.The arrangement of four battery compositions two is put, and each row arranges two battery pack.
In addition, each battery pack is all connected to same solar battery component junction box 200, and this solar battery component junction box 200 is provided with four diodes (not shown), and each battery pack is all in parallel with a diode 210.Like this, 6 cell piece tandems 100 in each battery pack are parallel with diode respectively, and when the low hot spot phenomenon of electric current appears in some cell piece tandems 100, electric current is process from diode, to avoid energy loss.
Embodiment three
Ginseng Figure 11 to Figure 13, solar module is in series mutually by four battery pack.Each battery pack comprises 6 cell piece tandems 100 in parallel.17 battery cutting blades 110 by the overlapping series connection of tin cream coating 120 are comprised in each cell piece tandem 100.Battery cutting blade 110 utilizes a solar battery sheet to carry out 3 grades to divide cutting obtained.As Figure 13, four battery pack are linearly arranged in order.When there being more battery pack, also so arrange.
In addition, each battery pack is all connected in parallel to a solar battery component junction box 200, and this solar battery component junction box 200 is provided with a diode 210.Like this, 6 cell piece tandems 100 in each battery pack are all parallel with diode 210, and when the low hot spot phenomenon of electric current appears in some cell piece tandems 100, electric current is process from diode 210, to avoid energy loss.
Embodiment four
Ginseng Figure 14, the difference of the present embodiment and embodiment three is, the solar module of the present embodiment comprises 6 battery pack be mutually connected in series, each battery pack comprises the cell piece tandem 100 of 4 connections parallel with one another, and each cell piece tandem 100 comprises 17 battery cutting blades 110 be mutually connected in series.
In addition, in the present embodiment, each battery pack is all connected in parallel to a solar battery component junction box 200, and this solar battery component junction box 200 is provided with a diode 210.Like this, 4 cell piece tandems in each battery pack are all parallel with diode 210, and when the low hot spot phenomenon of electric current appears in some cell piece tandems 100, electric current is process from diode 210, to avoid energy loss.
Embodiment five
Ginseng Figure 15, the difference of the present embodiment and embodiment three is, the solar module of the present embodiment comprises 3 battery pack be mutually connected in series, each battery pack comprises the cell piece tandem 100 of 8 connections parallel with one another, and each cell piece tandem 100 comprises 17 battery cutting blades 110 be mutually connected in series.
In addition, in the present embodiment, each battery pack is all connected in parallel to a solar battery component junction box 200, and this solar battery component junction box 200 is provided with a diode 210.Like this, 8 cell piece tandems in each battery pack are all parallel with diode 210, and when the low hot spot phenomenon of electric current appears in some cell piece tandems 100, electric current is process from diode 210, to avoid energy loss.
Embodiment six
Ginseng Figure 16, the difference of the present embodiment and embodiment three is, the solar module of the present embodiment comprises 8 battery pack be mutually connected in series, each battery pack comprises the cell piece tandem 100 of 3 connections parallel with one another, and each cell piece tandem 100 comprises 17 battery cutting blades 110 be mutually connected in series.
In addition, in the present embodiment, each battery pack is all connected in parallel to a solar battery component junction box 200, and this solar battery component junction box 200 is provided with a diode 210.Like this, 3 cell piece tandems in each battery pack are all parallel with diode 210, and when the low hot spot phenomenon of electric current appears in some cell piece tandems 100, electric current is process from diode 210, to avoid energy loss.
Embodiment seven
Ginseng Figure 17, the difference of the present embodiment and embodiment three is, the solar module of the present embodiment comprises 2 battery pack be mutually connected in series, each battery pack comprises the cell piece tandem 100 of 12 connections parallel with one another, and each cell piece tandem 100 comprises 17 battery cutting blades 110 be mutually connected in series.
In addition, in the present embodiment, each battery pack is all connected in parallel to a solar battery component junction box 200, and this solar battery component junction box 200 is provided with a diode 210.Like this, 12 cell piece tandems in each battery pack are all parallel with diode 210, and when the low hot spot phenomenon of electric current appears in some cell piece tandems 100, electric current is process from diode 210, to avoid energy loss.
Embodiment eight
Ginseng Figure 18, the difference of the present embodiment and embodiment three is, the solar module of the present embodiment comprises 12 battery pack be mutually connected in series, each battery pack comprises the cell piece tandem 100 of 2 connections parallel with one another, and each cell piece tandem 100 comprises 17 battery cutting blades 110 be mutually connected in series.
In addition, in the present embodiment, each battery pack is all connected in parallel to a solar battery component junction box 200, and this solar battery component junction box 200 is provided with a diode 210.Like this, 2 cell piece tandems in each battery pack are all parallel with diode 210, and when the low hot spot phenomenon of electric current appears in some cell piece tandems 100, electric current is process from diode 210, to avoid energy loss.Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification is recorded.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a solar module, it is characterized in that, comprise at least two battery pack of mutually connecting, described battery pack comprises at least two cell piece tandems parallel with one another, described cell piece tandem comprises at least two battery cutting blades of mutually connecting, the overlapping series connection of adjacent two described battery cutting blades in same cell piece tandem, the back side that described battery cutting blade comprises the front for absorbing light radiation and arranges dorsad relative to described front, described front is provided with the main grid for collecting electric current, the described back side is provided with back electrode, the main grid of described battery cutting blade and the back electrode of adjacent described battery cutting blade are welded together by tin cream coating.
2. solar module according to claim 1, is characterized in that, the area forming described at least two battery cutting blades of same described cell piece tandem is identical, the described main grid of battery cutting blade and the width of back electrode and identical length etc.
3. solar module according to claim 1, is characterized in that, comprise 4 battery pack of mutually connecting, described battery pack comprises 6 cell piece tandems parallel with one another, and described cell piece tandem comprises 17 battery cutting blades of mutually connecting.
4. solar module according to claim 1, is characterized in that, comprise 6 battery pack of mutually connecting, described battery pack comprises 4 cell piece tandems parallel with one another, and described cell piece tandem comprises 17 battery cutting blades of mutually connecting.
5. solar module according to claim 1, is characterized in that, comprise 3 battery pack of mutually connecting, described battery pack comprises 8 cell piece tandems parallel with one another, and described cell piece tandem comprises 17 battery cutting blades of mutually connecting.
6. solar module according to claim 1, is characterized in that, comprise 8 battery pack of mutually connecting, described battery pack comprises 3 cell piece tandems parallel with one another, and described cell piece tandem comprises 17 battery cutting blades of mutually connecting.
7. solar module according to claim 1, is characterized in that, comprise 2 battery pack of mutually connecting, described battery pack comprises 12 cell piece tandems parallel with one another, and described cell piece tandem comprises 17 battery cutting blades of mutually connecting.
8. a preparation method for solar module, is characterized in that, comprises the steps:
There is provided at least two battery cutting blades, the back side that described battery cutting blade comprises the front for absorbing light radiation and arranges dorsad relative to described front, described front is provided with the main grid for collecting electric current, and the described back side is provided with back electrode;
Soldering tin material is supplied to ultrasonic brazing unit, melt described soldering tin material, by on the soldering tin material main grid that is coated on described battery cutting blade after fusing or back electrode, obtain battery cutting blade main grid or back electrode being coated with soldering tin material, the battery cutting blade at least two described main grids or back electrode being coated with soldering tin material is connected successively, obtain cell piece tandem, in described cell piece tandem, the main grid of described battery cutting blade and the back electrode of adjacent described battery cutting blade are welded together by tin cream coating;
At least two described cell piece tandems are carried out parallel connection, obtains battery pack;
At least two described battery pack are connected, obtains solar module.
9. the preparation method of solar module according to claim 8, it is characterized in that, that is connected successively by the battery cutting blade at least two described main grids or back electrode being coated with soldering tin material is operating as: the back electrode at rear described battery cutting blade is covered in successively be coated with soldering tin material on the main grid of front described battery cutting blade;
Or the main grid at rear described battery cutting blade is covered in successively be coated with soldering tin material on the back electrode of front described battery cutting blade.
10. the preparation method of solar module according to claim 8, it is characterized in that, described ultrasonic brazing unit comprises for providing that part given by the tin silk of tin silk, for melting the ultrasonic bonding head of tin silk and giving the soldering tip feeding part of part and described ultrasonic bonding head for fixing described tin silk, described soldering tip feeding part can move along the described main grid of battery cutting blade or the length direction of back electrode.
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| CN201610004201.8A CN105489688A (en) | 2016-01-04 | 2016-01-04 | Solar battery module and preparation method thereof |
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| CN106711259A (en) * | 2017-02-06 | 2017-05-24 | 浙江正泰太阳能科技有限公司 | Slicing battery photovoltaic module |
| CN106785856A (en) * | 2016-11-25 | 2017-05-31 | 中国人民解放军装备学院 | Laser delivery of energy opto-electronic conversion synergisting method based on photovoltaic cell arrays circuit optimization |
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| CN110828597A (en) * | 2019-10-30 | 2020-02-21 | 深圳市百柔新材料技术有限公司 | Solar cell string and preparation method thereof |
| JP2022542516A (en) * | 2019-08-02 | 2022-10-04 | ジョジアン ジンコ ソーラー カンパニー リミテッド | Method for manufacturing a photovoltaic module |
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Application publication date: 20160413 |